Make opentelemetry dependency optional

This commit is contained in:
Felix Ableitner 2022-05-10 14:06:32 +02:00
parent f0ec3015cd
commit 80684de7da
5 changed files with 74 additions and 50 deletions

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@ -22,10 +22,15 @@ steps:
commands:
- /root/.cargo/bin/cargo fmt -- --check
- name: check lemmy_api_common with minimal deps
- name: check with different features
image: clux/muslrust:1.60.0
commands:
# api with minimal deps
- cargo check -p lemmy_api_common
# opentelemetry console
- cargo check --features console
# default features
- cargo check
- name: cargo clippy
image: clux/muslrust:1.60.0

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@ -14,7 +14,8 @@ doctest = false
debug = 0
[features]
console = ["console-subscriber"]
console = ["console-subscriber", "opentelemetry", "opentelemetry-otlp", "tracing-opentelemetry",
"reqwest-tracing/opentelemetry_0_16"]
default = []
[workspace]
@ -54,14 +55,14 @@ tracing-actix-web = { version = "0.5.1", default-features = false }
tracing-error = "0.2.0"
tracing-log = "0.1.2"
tracing-subscriber = { version = "0.3.9", features = ["env-filter"] }
console-subscriber = { version = "0.1.3", optional = true }
url = { version = "2.2.2", features = ["serde"] }
reqwest = { version = "0.11.10", features = ["json"] }
reqwest-middleware = "0.1.5"
reqwest-tracing = { version = "0.2.1", features = ["opentelemetry_0_16"] }
reqwest-tracing = "0.2.1"
clokwerk = "0.3.5"
doku = "0.11.0"
opentelemetry = { version = "0.17.0", features = ["rt-tokio"] }
opentelemetry-otlp = "0.10.0"
tracing-opentelemetry = "0.17.2"
parking_lot = "0.12.0"
console-subscriber = { version = "0.1.3", optional = true }
opentelemetry = { version = "0.17.0", features = ["rt-tokio"], optional = true }
opentelemetry-otlp = { version = "0.10.0", optional = true }
tracing-opentelemetry = { version = "0.17.2", optional = true }

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@ -3,25 +3,18 @@ pub mod api_routes;
pub mod code_migrations;
pub mod root_span_builder;
pub mod scheduled_tasks;
#[cfg(feature = "console")]
use console_subscriber::ConsoleLayer;
pub mod telemetry;
use lemmy_utils::LemmyError;
use opentelemetry::{
sdk::{propagation::TraceContextPropagator, Resource},
KeyValue,
};
use opentelemetry_otlp::WithExportConfig;
use tracing::subscriber::set_global_default;
use tracing_error::ErrorLayer;
use tracing_log::LogTracer;
use tracing_subscriber::{filter::Targets, layer::SubscriberExt, Layer, Registry};
pub fn init_tracing(opentelemetry_url: Option<&str>) -> Result<(), LemmyError> {
pub fn init_logging(opentelemetry_url: Option<&str>) -> Result<(), LemmyError> {
LogTracer::init()?;
opentelemetry::global::set_text_map_propagator(TraceContextPropagator::new());
let log_description = std::env::var("RUST_LOG").unwrap_or_else(|_| "info".into());
let targets = log_description
@ -31,41 +24,15 @@ pub fn init_tracing(opentelemetry_url: Option<&str>) -> Result<(), LemmyError> {
let format_layer = tracing_subscriber::fmt::layer().with_filter(targets.clone());
#[cfg(feature = "console")]
let console_layer = ConsoleLayer::builder()
.with_default_env()
.server_addr(([0, 0, 0, 0], 6669))
.event_buffer_capacity(1024 * 1024)
.spawn();
let subscriber = Registry::default()
.with(format_layer)
.with(ErrorLayer::default());
#[cfg(feature = "console")]
let subscriber = subscriber.with(console_layer);
if let Some(url) = opentelemetry_url {
let tracer = opentelemetry_otlp::new_pipeline()
.tracing()
.with_trace_config(
opentelemetry::sdk::trace::config()
.with_resource(Resource::new(vec![KeyValue::new("service.name", "lemmy")])),
)
.with_exporter(
opentelemetry_otlp::new_exporter()
.tonic()
.with_endpoint(url),
)
.install_batch(opentelemetry::runtime::Tokio)?;
let otel_layer = tracing_opentelemetry::layer()
.with_tracer(tracer)
.with_filter(targets);
let subscriber = subscriber.with(otel_layer);
set_global_default(subscriber)?;
if let Some(_url) = opentelemetry_url {
#[cfg(feature = "console")]
crate::telemetry::init_tracing(_url, subscriber, targets)?;
#[cfg(not(feature = "console"))]
tracing::error!("Feature `console` must be enabled for opentelemetry tracing");
} else {
set_global_default(subscriber)?;
}

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@ -20,7 +20,7 @@ use lemmy_routes::{feeds, images, nodeinfo, webfinger};
use lemmy_server::{
api_routes,
code_migrations::run_advanced_migrations,
init_tracing,
init_logging,
root_span_builder::QuieterRootSpanBuilder,
scheduled_tasks,
};
@ -54,7 +54,7 @@ async fn main() -> Result<(), LemmyError> {
let settings = Settings::init().expect("Couldn't initialize settings.");
init_tracing(settings.opentelemetry_url.as_deref())?;
init_logging(settings.opentelemetry_url.as_deref())?;
// Set up the r2d2 connection pool
let db_url = match get_database_url_from_env() {

51
src/telemetry.rs Normal file
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@ -0,0 +1,51 @@
use console_subscriber::ConsoleLayer;
use lemmy_utils::LemmyError;
use opentelemetry::{
sdk::{propagation::TraceContextPropagator, Resource},
KeyValue,
};
use opentelemetry_otlp::WithExportConfig;
use tracing::{subscriber::set_global_default, Subscriber};
use tracing_subscriber::{filter::Targets, layer::SubscriberExt, registry::LookupSpan, Layer};
pub fn init_tracing<S>(
opentelemetry_url: &str,
subscriber: S,
targets: Targets,
) -> Result<(), LemmyError>
where
S: Subscriber + for<'a> LookupSpan<'a> + Send + Sync + 'static,
{
opentelemetry::global::set_text_map_propagator(TraceContextPropagator::new());
let console_layer = ConsoleLayer::builder()
.with_default_env()
.server_addr(([0, 0, 0, 0], 6669))
.event_buffer_capacity(1024 * 1024)
.spawn();
let subscriber = subscriber.with(console_layer);
let tracer = opentelemetry_otlp::new_pipeline()
.tracing()
.with_trace_config(
opentelemetry::sdk::trace::config()
.with_resource(Resource::new(vec![KeyValue::new("service.name", "lemmy")])),
)
.with_exporter(
opentelemetry_otlp::new_exporter()
.tonic()
.with_endpoint(opentelemetry_url),
)
.install_batch(opentelemetry::runtime::Tokio)?;
let otel_layer = tracing_opentelemetry::layer()
.with_tracer(tracer)
.with_filter(targets);
let subscriber = subscriber.with(otel_layer);
set_global_default(subscriber)?;
Ok(())
}